<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>

         <!-- 卡片视图区域 -->
        <el-card>
            <!-- 搜索与添加区域 -->
            <el-row :gutter="20">
                <el-col :span="10">
                    <el-input @clear="getUserList" clearable placeholder="请输入内容" v-model="queryInfo.query">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button @click="addDialogVisible = true;" type="primary">添加用户</el-button>
                </el-col>
            </el-row>
            <!-- 用户列表区域 -->
            <el-table :data="userlist" border stripe>
                <el-table-column width="60px" type="index" label="序号"></el-table-column>
                <el-table-column label="姓名" prop="username"></el-table-column>
                <el-table-column label="邮箱" prop="email"></el-table-column>
                <el-table-column label="电话" prop="mobile"></el-table-column>
                <el-table-column label="角色" prop="role_name"></el-table-column>
                <el-table-column label="状态">
                    <!-- 作用域插槽 -->
                    <template slot-scope="scope">
                        <!-- switch 开关组件 -->
                        <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                        </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="180px">
                    <template slot-scope="scope">
                        <!-- 修改按钮 -->
                        <el-button type="primary" @click="showEditDialog(scope.row.id)" icon="el-icon-edit" size="mini"></el-button>
                        <!-- 删除按钮 -->
                        <el-button type="danger"  
                        @click="removeUserById(scope.row.id)" icon="el-icon-delete" size="mini"></el-button>
                        <!-- 分配角色按钮 -->
                        <el-tooltip  :enterable="false" effect="dark" content="分配角色" placement="top">
                            <el-button @click="setRole(scope.row)" type="warning" icon="el-icon-setting" size="mini"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>

            <!-- 分页区域 -->
            <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[1,3,5,10,15]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total"
            :hide-on-single-page="true"
            >
            </el-pagination>

            <!-- 添加用户的对话框 -->
            <!-- close	Dialog 关闭的回调
            https://element.eleme.cn/#/zh-CN/component/dialog
             -->
            <el-dialog
            title="添加用户"
            :visible.sync="addDialogVisible"
            width="50%"
            @close="addDialogClosed"
            >
                <!-- 内容主体区域 -->
               <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                    <el-form-item label="用户名" prop="username">
                        <el-input v-model="addForm.username"></el-input>
                    </el-form-item>
                    <el-form-item label="密码" prop="password">
                        <el-input v-model="addForm.password"></el-input>
                    </el-form-item>
                    <el-form-item label="邮箱" prop="email">
                        <el-input v-model="addForm.email"></el-input>
                    </el-form-item>
                    <el-form-item label="手机" prop="mobile">
                        <el-input v-model="addForm.mobile"></el-input>
                    </el-form-item>
               </el-form>
                <!-- 底部区域 -->
                <span slot="footer">
                    <el-button @click="addDialogVisible = false">取 消</el-button>
                    <el-button type="primary" @click="addUser">确 定</el-button>
                </span>
            </el-dialog>

        <!-- 修改用户对话框 -->
        <el-dialog
        title="修改用户"
        :visible.sync="editDialogVisible"
        width="50%"
        @close="editDialogClosed"
        >
            <!-- 内容主体区域 -->
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                <el-form-item label="用户名">
                    <el-input  disabled v-model="editForm.username"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email" >
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 表单底部区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 分配角色的对话框 -->
        <el-dialog
        title="分配角色"
        :visible.sync="setRoleDialogVisible"
        width="50%"
        @close="setRoleDialogClosed"
        >
       <div>
           <p>当前的用户：{{userInfo.username}}</p>
           <p>当前的角色：{{userInfo.role_name}}</p>
           <p>分配新角色：
                <el-select v-model="selectedRoleId" placeholder="请选择">
                    <el-option
                    v-for="item in rolesList"
                    :key="item.id"
                    :label="item.roleName"
                    :value="item.id">
                    </el-option>
                </el-select>
           </p>
       </div>
        <span slot="footer" class="dialog-footer">
            <el-button @click="setRoleDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
        </span>
        </el-dialog>
        

        </el-card>
    </div>
</template>

<script>
export default {
    data(){
        // 验证邮箱的规则
        var checkEmail = (rule, value, cb) => {
            // 验证邮箱的正则表达式
            const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

            if (regEmail.test(value)) {
                // 合法的邮箱
                return cb()
            }else{
                cb(new Error('请输入合法的邮箱'))
            }
        }
        //验证手机号的规则
        var checkMobile = (rule,value,cb)=>{
            // 验证手机号的正则表达式
            const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[0-9]|18[0-9]|14[57])[0-9]{8}$/ 
            if (regMobile.test(value)) { 
                return cb()
            } else { 
                cb(new Error('请输入合法的手机号')) 
            } 
        } 

        return{ 
            //获取用户列表的参数对象
            queryInfo:{
                query:'',
                //当前的页数
                pagenum:1,
                //当前每页显示多少条数据
                pagesize:6
            },
            userlist:[],
            total:0,
            addDialogVisible:false, //控制添加用户对话框的显示隐藏
            //添加用户的表单数据
            addForm:{
                username:'',
                password:'',
                email:'',
                mobile:'',

            },
            //添加表单的验证规则对象
            addFormRules:{
                username:[
                    { required: true, message: '请输入用户名', trigger: 'blur' },
                    { min: 3, max: 10, message: '用户名的长度在3~10个字符之间', trigger: 'blur' }
                ],
                password:[
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    { min:6, max: 15, message: '密码的长度在6~15个字符之间', trigger: 'blur' }
                ],
                email:[
                    { required: true, message: '请输入用户邮箱', trigger: 'blur' },
                    {validator:checkEmail,trigger: 'blur'}
                ],
                mobile:[
                    { required: true, message: '请输入用户手机号', trigger: 'blur' },
                    {validator:checkMobile,trigger: 'blur'}
                ]

            },
            //修改表单的验证规则对象
            editFormRules:{
                 email:[
                    { required: true, message: '请输入用户邮箱', trigger: 'blur' }, //可使其前部分添加星号
                    {validator:checkEmail,trigger: 'blur'}
                ],
                mobile:[
                    { required: true, message: '请输入用户手机号', trigger: 'blur' },
                    {validator:checkMobile,trigger: 'blur'}
                ]
            },
            editDialogVisible:false,//控制修改用户对话框的显示与隐藏
            editForm:{},//查询到的用户信息对象
            setRoleDialogVisible:false,//控制角色分配对话框的显示与隐藏
            userInfo:{},//需要被分配角色的用户信息
            rolesList:[],//所有角色数据列表
            selectedRoleId:'',//已选中的角色 Id 值
        }
    },
    created(){
        this.getUserList();
    },
    methods:{
        
        // 获取用户列表信息
        async getUserList(){
           const {data:res} = await this.$http.get('users',{
               params:this.queryInfo
            });
            if(res.meta.status != 200){
                return;
                this.$message.error('获取用户列表失败！');
            }else{
                this.userlist = res.data.users;
                this.total = res.data.total;
                // this.$message.success('获取用户列表成功！');
            }
            console.log(res);
        },
        // 监听 pagesize 改变的事件
        handleSizeChange(newSize){
            this.queryInfo.pagesize = newSize;
            console.log(newSize);
            this.getUserList();
        },
        // 监听 页码值 改变的事件
        handleCurrentChange(newPage){
            this.queryInfo.pagenum = newPage;
            console.log(newPage);
            this.getUserList();
        },
        //监听 switch 开关状态的改变
        async userStateChanged(userinfo){
            console.log(userinfo.mg_state);
           const {data:res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`);
           if(res.meta.status !== 200){
               userinfo.mg_state = !userinfo.mg_state;
               return;
               this.$message.error('更新用户状态失败！');

           }else{
               this.$message.success('更新用户状态成功！');
           }
        },
        //监听添加对话框的关闭事件
        addDialogClosed(){
            //resetFields  对整个表单进行重置，将所有字段值重置为初始值并移除校验结果
            this.$refs.addFormRef.resetFields();
        },
        //点击按钮，添加新用户
        addUser(){
            //validate  对整个表单进行校验的方法，参数为一个回调函数。该回调函数会在校验结束后被调用，并传入两个参数：是否校验成功和未通过校验的字段。若不传入回调函数，则会返回一个 promise
            this.$refs.addFormRef.validate(async valid =>{
                if(!valid){
                    return;
                }else{
                    //可以发起添加用户的网络请求
                   const{data:res} = await this.$http.post('users',this.addForm);
                    if(res.meta.status !== 201){
                        this.$message.error('添加用户失败！');
                    }else{
                        this.$message.success('添加用户成功！');
                        //隐藏添加用户的对话框
                        this.addDialogVisible = false;
                        //重新获取用户列表数据
                        this.getUserList();
                    }
                }
            })
        },
         //展示编辑用户的对话框
        // 通过修改按钮，触发对应的事件，将查询到的信息，保存到对象变量上
        async showEditDialog(id){
            const {data:res} = await this.$http.get('users/'+id);
            if(res.meta.status != 200){
                return;
                this.$message.error('查询用户信息失败！');
            }else{
                this.editForm = res.data;
                this.$message.success('查询用户信息成功！');
            }
            this.editDialogVisible = true;
            console.log('修改',id);
        },
        //监听修改用户对话框的关闭事件
        editDialogClosed(){
             this.$refs.editFormRef.resetFields();
        },
        //修改用户信息并提交
        editUserInfo(){
            this.$refs.editFormRef.validate(async valid =>{
                if(!valid){
                    return;
                }else{
                    //可以发起更新用户信息的网络请求
                    const {data:res} = await this.$http.put('users/'+this.editForm.id,{
                        email:this.editForm.email,
                        mobile:this.editForm.mobile
                    });
                    if(res.meta.status != 200){
                        return;
                        this.$message.error('更新用户信息失败！');
                    }else{
                        //隐藏添加用户的对话框
                        this.editDialogVisible = false;
                        //重新获取用户列表数据
                        this.getUserList();
                        //提示更新成功
                        this.$message.success(res.meta.msg);
                        }
                }
            })
        },
        //根据id删除对应的用户信息
        async removeUserById(id){
            //弹框询问用户是否删除数据
            const res =  await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
                }).catch(err => err);
                // 如果用户确认删除，则返回为字符串 confirm
                // 如果用户取消删除，则返回为字符串 cancel
                if(res=='confirm'){
                    const {data:ress} = await this.$http.delete(`users/`+id);
                    if(ress.meta.status != 200){
                        this.$message.error(ress.meta.msg);
                    }else {
                        //提示更新成功
                        this.$message.success(ress.meta.msg);
                        //重新获取用户列表数据
                        this.getUserList();
                    }
                    //this.$message.success('确认删除成功');
                }else{
                    //type	主题 string	success/warning/info/error	info
                    return this.$message.info('取消删除成功');
                } 
        },
        //展示角色分配的对话框
        async setRole(userInfo){
            this.userInfo = userInfo;
            //在展示对话框之前，获取所有角色的列表
            const{data:res} = await this.$http.get(`roles`);
            if(res.meta.status !== 200){
                return this.$message.error(res.meta.msg);
            }else{
                this.rolesList = res.data;
                this.$message.success(res.meta.msg);
            }
            this.setRoleDialogVisible = true;
        },
        //点击按钮分配角色
        async saveRoleInfo(){
            console.log('ces');
            if(!this.selectedRoleId){
                return this.$message.error('请选择要分配的角色！');
            }else{
                const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{
                    rid:this.selectedRoleId
                });
                if(res.meta.status !== 200){
                    return this.$message.error(res.meta.msg);
                }else{
                    //重新获取用户列表数据
                    this.getUserList();
                    this.setRoleDialogVisible = false;
                    return this.$message.success(res.meta.msg);
                }

            }
        },
        //监听关闭角色对话框的关闭事件
        setRoleDialogClosed(){
            this.selectedRoleId = '';
            this.userInfo = {};
        }
        
    }
}
</script>

<style scoped>

</style>